RE: [PATCH] compress 2.018
[p5sagit/p5-mst-13.2.git] / cflags.SH
CommitLineData
a02608de 1case $PERL_CONFIG_SH in
1c3d792e 2'')
a0d0e21e 3 if test -f config.sh; then TOP=.;
4 elif test -f ../config.sh; then TOP=..;
5 elif test -f ../../config.sh; then TOP=../..;
6 elif test -f ../../../config.sh; then TOP=../../..;
7 elif test -f ../../../../config.sh; then TOP=../../../..;
8 else
9 echo "Can't find config.sh."; exit 1
10 fi
11 . $TOP/config.sh
12 ;;
1c3d792e 13esac
2b317908 14: This forces SH files to create target in same directory as SH file.
15: This is so that make depend always knows where to find SH derivatives.
1c3d792e 16case "$0" in
17*/*) cd `expr X$0 : 'X\(.*\)/'` ;;
18esac
bc730b18 19
37723ebb 20if test -f config_h.SH -a ! -f config.h; then
6ef8aa7c 21 . ./config_h.SH
11e2f395 22 CONFIG_H=already-done
6ef8aa7c 23fi
24
bc730b18 25warn=''
26
27# Add -Wall for the core modules iff gcc and not already -Wall
28case "$gccversion" in
29'') ;;
30Intel*) ;; # The Intel C++ plays gcc on TV but is not really it.
31*) case "$ccflags" in
32 *-Wall*) ;;
33 *) warn="$warn -Wall" ;;
34 esac
35 ;;
36esac
37
a07cd53d 38# Create a test source file for testing what options can be fed to
39# gcc in this system; include a selection of most common and commonly
40# hairy include files.
41
42cat >_cflags.c <<__EOT__
43#include "EXTERN.h"
44#include "perl.h"
45/* The stdio.h, errno.h, and setjmp.h should be there in any ANSI C89. */
46#include <stdio.h>
47#include <errno.h>
48#include <setjmp.h>
49/* Just in case the inclusion of perl.h did not
50 * pull in enough system headers, let's try again. */
51#ifdef I_STDLIB
52#include <stdlib.h>
53#endif
54#ifdef I_STDDEF
55#include <stddef.h>
56#endif
57#ifdef I_STDARG
58#include <stdarg.h>
59#endif
60#ifdef I_LIMITS
61#include <limits.h>
62#endif
63#ifdef I_DIRENT
64#include <dirent.h>
65#endif
66#ifdef I_UNISTD
67#include <unistd.h>
68#endif
463bdbaf 69#ifdef I_SYS_TYPES
a07cd53d 70#include <sys/types.h>
71#endif
463bdbaf 72#ifdef I_SYS_PARAM
a07cd53d 73#include <sys/param.h>
74#endif
463bdbaf 75#ifdef I_SYS_RESOURCE
a07cd53d 76#include <sys/resource.h>
77#endif
463bdbaf 78#ifdef I_SYS_SELECT
a07cd53d 79#include <sys/select.h>
80#endif
81#if defined(HAS_SOCKET) && !defined(VMS) && !defined(WIN32) /* See perl.h. */
82#include <sys/socket.h>
83#endif
463bdbaf 84#ifdef I_SYS_STAT
a07cd53d 85#include <sys/stat.h>
86#endif
463bdbaf 87#ifdef I_SYS_TIME
a07cd53d 88#include <sys/time.h>
89#endif
463bdbaf 90#ifdef I_SYS_TIMES
a07cd53d 91#include <sys/times.h>
92#endif
463bdbaf 93#ifdef I_SYS_WAIT
a07cd53d 94#include <sys/wait.h>
95#endif
96/* The gcc -ansi can cause a lot of noise in Solaris because of:
97 /usr/include/sys/resource.h:148: warning: 'struct rlimit64' declared inside parameter list
98 */
99int main(int argc, char *argv[]) {
100
101/* Add here test code found to be problematic in some gcc platform. */
102
103/* Off_t/off_t is a struct in Solaris with largefiles, and with gcc -ansi
104 * that struct cannot be compared in some gcc releases with a flat
105 * integer, such as a STRLEN. */
106
215ed6ce 107 IV iv;
a07cd53d 108 Off_t t0a = 2;
109 STRLEN t0b = 3;
110 int t0c = t0a == t0b;
111
215ed6ce 112/* In FreeBSD 6.2 (and probably other releases too), with -Duse64bitint,
113 perl will use atoll(3). However, that declaration is hidden in <stdlib.h>
114 if we force the compiler to use -std=c89 mode.
115*/
116 iv = Atol("42");
117
118 return (!t0c && (iv == 42)) ? 0 : -1; /* Try to avoid 'unused' warnings. */
a07cd53d 119}
120__EOT__
121
122stdflags=''
bc730b18 123
215ed6ce 124# Further gcc warning options. Build up a list of options that work.
125# Note that some problems may only show up with combinations of options,
126# e.g. a warning might show up only with -Wall -ansi, not with either
127# one individually.
128# TODO: Ponder whether to migrate this back to Configure so hints files can
129# tweak it. Also, be paranoid about whether results we've deduced in Configure
130# (especially about things like long long, which are not in C89) will still be
131# valid if we now add flags like -std=c89.
132
bc730b18 133case "$gccversion" in
134'') ;;
a07cd53d 135[12]*) ;; # gcc versions 1 (gasp!) and 2 are not good for this.
136Intel*) ;; # # Is that you, Intel C++?
288b8c02 137*) for opt in -ansi -std=c89 -W -Wextra -Wdeclaration-after-statement -Wendif-labels -Wc++-compat
bc730b18 138 do
139 case " $ccflags " in
a07cd53d 140 *" $opt "*) ;; # Skip if already there.
141 *) rm -f _cflags$_exe
463bdbaf 142 case "`$cc $cflags $warn $stdflags $opt _cflags.c -o _cflags$_exe 2>&1`" in
bc730b18 143 *"unrecognized"*) ;;
215ed6ce 144 *"implicit declaration"*) ;; # Was something useful hidden?
bc730b18 145 *"Invalid"*) ;;
9ac4c107 146 *"is valid for C"*) ;;
a07cd53d 147 *) if test -x _cflags$_exe
148 then
149 case "$opt" in
150 -std*) stdflags="$stdflags $opt" ;;
151 *) warn="$warn $opt" ;;
152 esac
153 fi
154 ;;
bc730b18 155 esac
156 ;;
157 esac
bc730b18 158 done
159 ;;
160esac
a07cd53d 161rm -f _cflags.c _cflags$_exe
bc730b18 162
9ac4c107 163case "$gccversion" in
164'') ;;
165*)
3e8416a3 166 if [ "$gccansipedantic" = "" ]; then
167 # If we have -Duse64bitint (or equivalent) in effect and the quadtype
168 # has become 'long long', gcc -pedantic becomes unbearable (moreso
169 # when combined with -Wall) because long long and LL and %lld|%Ld
170 # become warn-worthy. So let's drop the -pedantic in that case.
171 case "$quadtype:$sPRId64" in
172 "long long"*|*lld*|*Ld*)
173 ccflags="`echo $ccflags|sed 's/-pedantic/ /'`"
174 warn="`echo $warn|sed 's/-pedantic/ /'`"
175 ;;
176 esac
215ed6ce 177 # Similarly, since 'long long' isn't part of C89, FreeBSD 6.2 headers
178 # don't declare atoll() under -std=c89, but we need it. In general,
179 # insisting on -std=c89 is inconsistent with insisting on using
180 # 'long long'. So drop -std=c89 and -ansi as well if we're using
181 # 'long long' as our main integral type.
182 case "$ivtype" in
183 "long long")
184 ccflags=`echo $ccflags|sed -e 's/-pedantic/ /' -e 's/-std=c89/ /' -e 's/-ansi/ /'`
185 warn=`echo $warn|sed -e 's/-pedantic/ /' -e 's/-ansi/ /'`
a5105380 186 stdflags=`echo $stdflags|sed -e 's/-std=c89/ /'`
215ed6ce 187 ;;
188 esac
3e8416a3 189 fi
5cf489d6 190 # Using certain features (like the gcc statement expressions)
191 # requires knowing whether -pedantic has been specified.
9ac4c107 192 case "$warn$ccflags" in
193 *-pedantic*) warn="$warn -DPERL_GCC_PEDANTIC" ;;
194 esac
a07cd53d 195 ;;
196esac
b1e55cab 197
10edeb5d 198# Code to set any extra flags here.
a07cd53d 199extra=''
11fcce85 200
2b317908 201echo "Extracting cflags (with variable substitutions)"
202: This section of the file will have variable substitutions done on it.
203: Move anything that needs config subs from !NO!SUBS! section to !GROK!THIS!.
204: Protect any dollar signs and backticks that you do not want interpreted
205: by putting a backslash in front. You may delete these comments.
165b7424 206rm -f cflags
2b317908 207$spitshell >cflags <<!GROK!THIS!
ecfc5424 208$startsh
bc730b18 209
11fcce85 210# Extra warnings, used e.g. for gcc.
bc730b18 211warn="$warn"
11fcce85 212# Extra standardness.
213stdflags="$stdflags"
b1e55cab 214# Extra extra.
215extra="$extra"
dcff826f 216# what do executables look like?
217_exe="$_exe"
bc730b18 218
2b317908 219!GROK!THIS!
220
221: In the following dollars and backticks do not need the extra backslash.
222$spitshell >>cflags <<'!NO!SUBS!'
a02608de 223case $PERL_CONFIG_SH in
2b317908 224'')
a0d0e21e 225 if test -f config.sh; then TOP=.;
226 elif test -f ../config.sh; then TOP=..;
227 elif test -f ../../config.sh; then TOP=../..;
228 elif test -f ../../../config.sh; then TOP=../../..;
229 elif test -f ../../../../config.sh; then TOP=../../../..;
230 else
231 echo "Can't find config.sh."; exit 1
232 fi
233 . $TOP/config.sh
234 ;;
235esac
236
75550b4e 237: syntax: cflags [optimize=XXX] [file[.suffix]]
238: displays the compiler command line for file
239
1167a30e 240case "X$1" in
26102cc7 241Xoptimize=*|X"optimize=*")
1167a30e 242 eval "$1"
243 shift
244 ;;
245esac
246
1c3d792e 247also=': '
248case $# in
2b317908 2491) also='echo 1>&2 " CCCMD = "'
1c3d792e 250esac
251
252case $# in
2530) set *.c; echo "The current C flags are:" ;;
1c3d792e 254esac
2b317908 255
578789a7 256set `echo "$* " | sed -e 's/\.[oc] / /g' -e 's/\.obj / /g' -e "s/\\$obj_ext / /g"`
2b317908 257
1c3d792e 258for file do
259
260 case "$#" in
261 1) ;;
2b317908 262 *) echo $n " $file.c $c" ;;
1c3d792e 263 esac
264
2b317908 265 : allow variables like toke_cflags to be evaluated
266
8736538c 267 if echo $file | grep -v / >/dev/null
268 then
269 eval 'eval ${'"${file}_cflags"'-""}'
270 fi
2b317908 271
272 : or customize here
273
1c3d792e 274 case "$file" in
a0d0e21e 275 DB_File) ;;
276 GDBM_File) ;;
2304df62 277 NDBM_File) ;;
278 ODBM_File) ;;
279 POSIX) ;;
280 SDBM_File) ;;
281 av) ;;
4b6be2dd 282 byterun) ;;
2304df62 283 deb) ;;
284 dl) ;;
2b317908 285 doio) ;;
2304df62 286 doop) ;;
2b317908 287 dump) ;;
59bea8cf 288 globals) ;;
2304df62 289 gv) ;;
290 hv) ;;
a6ec74c1 291 locale) ;;
59bea8cf 292 madly) ;;
2304df62 293 main) ;;
2b317908 294 malloc) ;;
2304df62 295 mg) ;;
296 miniperlmain) ;;
a6ec74c1 297 numeric) ;;
2304df62 298 op) ;;
59bea8cf 299 opmini) ;;
300 pad) ;;
dcff826f 301 perl) ;;
6f4183fe 302 perlapi) ;;
2304df62 303 perlmain) ;;
2b317908 304 perly) ;;
2304df62 305 pp) ;;
a0d0e21e 306 pp_ctl) ;;
307 pp_hot) ;;
a6ec74c1 308 pp_pack) ;;
59bea8cf 309 pp_sort) ;;
a0d0e21e 310 pp_sys) ;;
2b317908 311 regcomp) ;;
312 regexec) ;;
2304df62 313 run) ;;
314 scope) ;;
315 sv) ;;
316 taint) ;;
2b317908 317 toke) ;;
59bea8cf 318 universal) ;;
2b317908 319 usersub) ;;
59bea8cf 320 utf8) ;;
2b317908 321 util) ;;
1c3d792e 322 *) ;;
323 esac
324
a7d59441 325 case "$cc" in
326 *g++*)
327 # Extra paranoia in case people have bad canned ccflags:
328 # bad in the sense that the flags are accepted by g++,
329 # but then whined about.
330 for f in -Wdeclaration-after-statement -std=c89
331 do
332 ccflags=`echo $ccflags|sed 's/$f/ /'`
333 done
334 ;;
335 esac
336 cppflags=`echo $cppflags|sed 's/-Wdeclaration-after-statement/ /'`
337
338 case "$cc" in
339 *g++*)
340 # Without -Wno-unused-variable g++ 4.x compiles are rather unwatchable
341 # because of all the warnings about Perl___notused, and g++ doesn't do
342 # __attribute__((unused)) (and even if at some stage it may, people do
343 # have older gcc installations), and ((void)x) isn't enough to silence
344 # the noises about XS functions not using their cv parameter, so we need
345 # the -Wno-unused-parameter too.
346 # Yes, we lose some valid warnings, but hopefully other compilers
347 # (like gcc) will still pick up those warnings.
348 for o in -Wno-unused-variable -Wno-unused-parameter
349 do
350 case "$warn" in
351 *$o*) ;;
352 *) warn="$warn $o" ;;
353 esac
354 done
355 ;;
7e827271 356 esac
666ea192 357
69c7f294 358
c4f23d77 359 : Can we perhaps use $ansi2knr here
b1e55cab 360 echo "$cc -c -DPERL_CORE $ccflags $stdflags $optimize $warn $extra"
361 eval "$also "'"$cc -DPERL_CORE -c $ccflags $stdflags $optimize $warn $extra"'
2b317908 362
a0d0e21e 363 . $TOP/config.sh
2b317908 364
a7d59441 365 # end per file behaviour
1c3d792e 366done
2b317908 367!NO!SUBS!
a0d0e21e 368chmod 755 cflags
2b317908 369$eunicefix cflags